"Remove failed node" on duplicate device?

[Provo]

I had to reinstall raspbian and everything on my rpi, and when Z-Way was up and running again, I had to exclude and reinclude most devices in order to get them past the security interview. But for some reason, one smoke alarm wasn't completely excluded before it was reincluded. So now I have the very same smoke alaram as a perfectly working newly added device with ID #16 and as a nonfunctional device with ID #11. But even if device #11 isn't really functional and its Wireless activity under Configuration in the Expert UI shows "Device seems to be dead", and it is the same piece of hardware as device #16, both show up in the Routing table in the Expert UI, which seems a bit strange.

Is using the "Remove failed node" function in the Expert UI the safe and correct way of getting rid of device #11? Or could that also fudge up device #16?

[phzi]

Yes, removed failed node should be the right approach.

[Provo]

It didn't work. The text says that the process will take about one minute, but it immediately completes. The device is then lacking from the drop down list, but only until i refresh the page. Then it's back. I also tried removing it through the Smarthome UI device management, but that just hangs on network check and never completes.

Any suggestions on how to get rid of this device?